Variable in Java

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Table 16-16 Variable
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name embolden oblique
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The Variables of the Font Class Type
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String Boolean Boolean
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Access
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RI RI RI
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Default
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Empty
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false false
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Description
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The font name Requests a bold or bolder font when true Desktop profile only Requests an italicized or more italicized font when true Desktop profile only The required FontPosition, where null means REGULAR Desktop profile only The required font size, in points Requests that automatic kerning be performed (Requires Java 6 On earlier platforms, kerning is always enabled) Desktop profile only Requests that font ligatures be used, if the font supports them (Requires Java 6 On earlier Java platforms, ligatures will always be used if they are available) Desktop profile only The amount of extra space to be used between letters (Requires Java 6 On earlier platforms, the standard spacing will always be used) Desktop profile only The family to which the font belongs Set based on the chosen font The style of the chosen font See text
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position
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Font Position Number Boolean
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null
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size autoKern
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true
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ligatures
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Boolean
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letterSpacing
Number
family
String
style
String
With the exception of family and style, these variables must all be set or defaulted when the Font object is created, to specify the characteristics of the font that is required
Fonts
During the initialization of the Font object, the required font is located, based on the value of the name variable If it does not exist, a default is used insteadThe name variable is always changed to refer to the font that is actually loaded, so it is possible to determine whether you got the font that you wantedThe family and style variables are also set to refer to the loaded font s family and its style, which indicates whether the font is a bold/italic variant
Listing Fonts and Font Families
The Font class has functions that let you get a list of all the font and font families that are installed on your systemThe following code, from the file javafxshapes/Fonts3fx, gets and prints a list of all the installed font families:
println("Font families:"); for (family in FontgetFamilies()) { println(family); }
This list would include entries for the logical font families provided by the JRE, such as Dialog, DialogInput, and so on, as well as all the available physical fonts The getFontNames() function returns the names of all the available physical and logical fonts:
println("\n\nFonts:"); for (name in FontgetFontNames()) { println(name); }
Finally, a variant of the getFontNames() function accepts a font family name and returns the names of all the installed fonts in that familyThis code returns all the available fonts in the Tahoma family:
println("\n\nTahoma fonts:"); for (name in FontgetFontNames("Tahoma")) { println(name); }
The output from this code on my desktop system is as follows:
Tahoma fonts: Tahoma Tahoma Bold
Selecting Fonts
There are two different ways to create a Font object: You can either use an object initializer, or you can use one of the functions of the Font class that looks for a font given a family name and specific characteristics If you want to get a subscript or superscript font, you can only do so by using an object literal
16 Shapes, Text, and Images
Using an Object Literal To create a font using an object literal, you typically supply at least a font name and a size If you want a bold or italic font and your code is known to be running on a JavaFX runtime that supports the desktop profile, you could also set the embolden and oblique variables as appropriateThe following code, from the file javafxshapes/Fonts4fx, requests a 24-point Times New Roman Bold font and prints the result:
var font = Font { name: "Times New Roman Bold" size: 24 } println("Name: {fontname}, family: {fontfamily}, " "style: {fontstyle}");
On my system, this prints the following:
Name: Times New Roman Bold, family: Times New Roman, style: Bold
As you can see, the name is unchanged, which means that the actual font that was requested was foundThe family and style variables have been set to the appropriate values for that font Similarly, the following code loads a bold and italic version of the font:
font = Font { name: "Times New Roman Bold Italic" size: 24 } println("Name: {fontname}, family: {fontfamily}, " "style: {fontstyle}");
Here s the result: